Category: Points of Information

Very brief descriptions, with appropriate links, of current or recent news items.

Russia launches earth resources satellite

9:53 am

Russia today successfully launched the last in a five-satellite constellation of satellites focused on mapping Earth resources, its Soyuz-2 rocket lifting off from Baikonur in Kazakhstan.

The rocket’s core stage and four side boosters fell into frequently-used drop zones in Kazakhstan and Russia.

The leaders in the 2024 launch race:

134 SpaceX
64 China
17 Russia
14 Rocket Lab

American private enterprise still leads the rest of the world combined in successful launches 154 to 97, while SpaceX by itself leads the entire world, including American companies, 134 to 117.

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December 24, 2024 Quick space links

1:36 pm

Today has been, not surprisingly, a very slow news day, so I’ve been spending it trolling the Mars Reconnaissance Orbiter (MRO) archive for more cool images from Mars.

BtB’s stringer Jay however found some quick links, so here they are. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

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December 23, 2024 Quick space links

4:09 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

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A Martian river of sand

11:33 am

Overview map

A Martian river of sand

Cool image time! The picture to the right, rotated, cropped, reduced, and sharpened to post here, was taken on July 26, 2024 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). The red dot in the overview map above marks the location, within the western reaches of the vast Martian canyon dubbed Valles Marineris.

The picture looks at the flow of dust and sand going down the canyon’s southern rim, with particular focus on the central canyon in the picture’s center. The photo was taken as part of a long-term project, begun in 2020 to monitor this river of sand to see if any changes occur over time. Clearly the sand is flowing downhill, almost like a river, with the dunes almost resembling waves. The geological issue is to determine how fast. Based on the resolution available to me, it is impossible to tell it there have been any changes in the past four years, but the full MRO dataset might reveal more information.

To get an idea of scale, the elevation loss from the top to the bottom in this picture is about 6,000 feet. While this seems like a substantial amount, it pales when placed in the context of Valles Marineris. For example, the elevation loss for the canyon’s northern wall is about 25,400 feet, making that wall exceed in height most of the mountains in the Himalayas. And that wall extends for more than 1,500 miles.

Valles Marineris’ southern wall is more complex. It rises about 18,000 feet from the floor of the canyon to the top of the peak on which this slope sits, but then drops 6,700 feet into a parallel side canyon. From there the rise to the southern rim is about 11,000 feet. All told the southern rim sits about 23,000 feet above the canyon floor, once again a drop that would exceed most mountains on Earth.

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Using Hubble to monitor a fading supernova

9:38 am

Barred spiral
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken by the Hubble Space Telescope as part of a monitoring program of the fading supernova that occurred in this galaxy in 2014, 60 million light years away. I have added a white dot to indicate the approximate location [pdf] of that supernova, as it is now too dim to see clearly in the original image. From the caption:

Researchers have determined that SN 2014cx was a Type IIP supernova. The “Type II” classification means that the exploding star was a supergiant at least eight times as massive as the Sun. The “P” stands for plateau, meaning that after the light from the supernova began to fade, the level reached a plateau, remaining at the same brightness for several weeks or months before fading further. This type of supernova occurs when a massive star can no longer produce enough energy in its core to stave off the crushing pressure of gravity. SN 2014cx’s progenitor star is estimated to have been ten times more massive than the Sun and hundreds of times as wide. Though it has long since dimmed from its initial brilliance, researchers are still keeping tabs on this exploded star, not least through the Hubble observing programme which produced this image.

The blue regions in the galaxy’s periphery suggest younger stars, while the gold color in the interior suggests an older population.

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Dubai-based AI/3D printing company successfully test fires an aerospike engine

9:15 am

LEAP71's aerospike test engine
Click for original image.

The Dubai-based startup LEAP71, focused on using AI software to quickly develop rocket engine designs it can then 3D print, has successfully test fired a prototype aerospike engine on December 18, 2024 during a static fire test campaign conducted in the United Kingdom.

Aerospikes are more compact and significantly more efficient across various atmospheric pressures, including the vacuum of space. They forego the conventional bell-shaped nozzle by placing a spike in the center of a toroidal combustion chamber [as shown in the photo to the right]. Since it is surrounded by 3,500ºC hot exhaust gas, cooling the spike is an enormous challenge.

Josefine Lissner, CEO and Co-Founder of LEAP 71, stated: “We were able to extend Noyron’s physics to deal with the unique complexity of this engine type. The spike is cooled by intricate cooling channels flooded by cryogenic oxygen, whereas the outside of the chamber is cooled by the kerosene fuel. I am very encouraged by the results of this test, as virtually everything on the engine was novel and untested. It’s a great validation of our physics-driven approach to computational AI.”

The spike in the center acts as one wall of the nozzle, and the changing pressure of the atmosphere acting as the other side of the nozzle, allowing the nozzle size to change as the rocket rises, thus making its thrust as efficient as possible.

This test was apparently with a small scale prototype, not a full scale engine. LEAP71 engineers are going to have to go though a lot more iterations using their AI software and 3D printing to get to a version usable on a rocket. The company claims that development will go far faster this way. That this company did its testing in the UK but is based in Dubai suggests its capital comes from that Middle Eastern country, which is trying to develop a space industry of its own, but it is mainly relying on British designers — at this point — to get things done.

It will have to do so quickly, since another startup, German-based Polaris Spaceplanes, in November 2024 actually completed the first test flight ever of a prototype using an aerospike engine.

After decades of speculation about the advantages of an aerospike engine but no successful flights, we now have a race between two companies to be the first to fly one, and the effort is going on in Europe.

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SpaceX launches 21 Starlink satellites

10:44 pm

SpaceX tonight successfully launched 21 Starlink satellites, its Falcon 9 lifting off from Kennedy in Florida. Thirteen of the satellites were configured for direct-to-cell capabilities.

The first stage completed its fourteenth flight, landing on a drone ship in the Atlantic.

The leaders in the 2024 launch race:

134 SpaceX
64 China
16 Russia
14 Rocket Lab

American private enterprise now leads the rest of the world combined in successful launches 154 to 96, while SpaceX by itself leads the entire world, including American companies, 134 to 116.

Tonight’s launch was also the 250th worldwide in 2024, a record that approximately triples the average number of successful launches each year from 1957 to 2017, when SpaceX and China began to ramp up their launch counts.

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NASA awards four companies contracts to provide communications for operations in Earth orbit

11:30 am

Capitalism in space: Rather than continue to build its own constellation of communications satellites, NASA yesterday awarded four companies contracts to provide that service to the agency’s many Earth orbit operations.

The work will be awarded under new Near Space Network services contracts that are firm-fixed-price, indefinite-delivery/indefinite-quantity contracts. Project timelines span from February 2025 to September 2029, with an additional five-year option period that could extend a contract through Sept. 30, 2034. The cumulative maximum value of all Near Space Network Services contracts is $4.82 billion.

The companies are Intuitive Machines, SSC Space, Viasat (based in Georgia), and the Norwegian company Kongsberg Satellite services.

Not only will these companies provide a better service faster and at less cost than the NASA TDRS satellite constellation, that there are four of them provides redundancy as well as fosters competition.

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Defunct Pentagon weather satellite breaks up

10:40 am

According to the Space Force as well as two commercial space tracking companies, a defunct military weather satellite launched in 1997 has broken up into more than fifty pieces.

The satellite, dubbed DMSP-5D2 F14, was in a sun-synchronous orbit over the poles. What makes the break-up significant is that it is not the first of this design of weather satellites to do so.

DMSP-5D2 F14 is part of a family of spacecraft that have suffered breakups in orbit. The F12 satellite broke up in October 2016, following the breakup of F13 in February 2015. In 2004, the F11 spacecraft broke up, creating 56 pieces of tracked debris. All the satellites had a battery assembly with a design flaw that made them vulnerable to explosion.

A similar spacecraft design was used for a line of civilian polar-orbiting weather satellites operated by the National Oceanic and Atmospheric Administration. The NOAA-16 satellite broke up in November 2015, followed by NOAA-17 in March 2021.

Overall the military launched nine satellites of this design, while NOAA launched three. Of these twelve satellites six have now broken apart. We should expect a large percentage of the remaining six to also break up.

This story explains why in the last ten years a number of companies have appeared attempting to develop the technology to remove space junk. There is a desperate need in the satellite industry for this capability, and those space junk companies are aiming to make profit from this need.

Note I do not expect or want the government to take the lead in this. This issue is mostly a need of the satellite industry, of which the world’s governments are merely just one more participant. This industry should band together to set up a fund to pay for this work, with those governments joining as just one more partner.

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Liechtenstein signs the Artemis Accords

10:16 am

The tiny nation of Liechtenstein in Europe yesterday became the 52nd nation to sign the Artemis Accords.

The full list of nations now part of this American space alliance: Angola, Argentina, Armenia, Australia, Austria, Bahrain, Belgium, Brazil, Bulgaria, Canada, Chile, Colombia, Cyprus, Czech Republic, Denmark, Dominican Republic, Ecuador, Estonia, France, Germany, Greece, Iceland, India, Israel, Italy, Japan, Liechtenstein, Lithuania, Luxembourg, Mexico, the Netherlands, New Zealand, Nigeria, Panama, Peru, Poland, Romania, Rwanda, Saudi Arabia, Singapore, Slovakia, Slovenia, South Korea, Spain, Sweden, Switzerland, Thailand, the United Kingdom, the United Arab Emirates, the Ukraine, the United States and Uruguay.

There has been a flurry of new nations signing the accords since the November election of Trump. I suspect his coming encouraged these nations to sign, knowing the moribund leadership of Biden will soon be replaced with something more robust. It is also likely that these nations see a renewal of Trump’s original goals for the Artemis Accords, to create an international alliance, led by the United States, with the goal of overcoming the Outer Space Treaty’s limitations on private property.

I hope this turns out to be true. This alliance gives Trump a powerful lobby he can wield to force change.

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SpaceX and Rocket Lab complete two launches overnight

10:04 am

Though one SpaceX launch early last night had a launch abort, both SpaceX and Rocket Lab completed additional launches later in the evening.

First, SpaceX completed its second Bandwagon in which 30 payloads were sent to mid-inclination orbits, its Falcon 9 rocket lifting off from Vandenberg in California. The first stage flew its twenty-first flight, landing successfully back its landing site at Vandenberg. The two fairings completed their 14th and 18th flights.

Next, Rocket Lab completed its sixth launch of sixteen for the commercial satellite company Synspective, its Electron rocket lifting off from one of its two launchpads in New Zealand. This was the 14th successful launch for Rocket Lab in 2024, a significant increase from the nine and eight launches it flew in 2022 and 2023.

The leaders in the 2024 launch race:

133 SpaceX
64 China
16 Russia
14 Rocket Lab

American private enterprise now leads the rest of the world combined in successful launches 153 to 96, while SpaceX by itself leads the entire world, including American companies, 133 to 116.

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SpaceX experiences a launch abort at T-0

10:29 pm

During a launch attempt tonight from Cape Canaveral in Florida, SpaceX experienced a launch abort at T-0 seconds for reasons that have not yet been determined but apparently were complex enough that mission control decided to scrub for the evening. No new launch has been scheduled as yet.

The launch was to have placed four smallsats into geosynchronous orbit. The satellites were built by the satellite company Astranis, which appears to be the first to launch smallsats to geosynchronous orbit. It had already placed one in orbit, and these four satellites expand its constellation.

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Enrollment in colleges nationwide dropped 5% in 2024

4:47 pm


Modern college education: “But Brawndo’s got
what plants crave. It’s got electrolytes!”

According to a report by the National Student Clearinghouse Research Center, college enrollment in 2023 dropped by 5% from the previous year, suggesting that high school students are beginning to question the value of attending colleges where anti-Semitism and bigotry is promoted and white and Asian students are treated like dirt.

It could also be because they are beginning to realize that — at least in the soft sciences like history, sociology, literature, etc — all they will get is leftist/Marxist indoctrination, not a true education.

The statistics point in this direction:

Enrollment declined across racial groups for 18-year-old freshmen, though white students saw the steepest decline, the analysis found. White 18-year-old enrollment dropped 10 percent between fall 2023 and 2024, compared to 8.4 percent for multiracial students, 8.2 percent for Black students, 5.7 percent for Asian students and 2.1 percent for Hispanic students.
» Read more

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December 20, 2024 Quick space links

3:44 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

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China launches a communications test satellite

3:36 pm

According to China’s uninformative state-run press, it today launched “a test satellite for communication technology,” its Long March 3B rocket lifting off from its Xichang spaceport in southwest China.

No other details about the satellite were released. Nor did the state-run press provide any information about where the rocket’s lower stages, using very toxic hypergolic fuel, crashed inside China.

As is usual for China, it is doing a lot of launches at the end of the year. Though weather might be a factor, I also suspect it is the ordinary “use-it-or-lose-it” symptom of a government-run communist society. Budgets are set for the year. Government agencies find that they better launch or they will lose that budgeted amount in the next year’s budget.

This might not apply to China but if so it would explain its strange end-of-year launch pattern.

The leaders in the 2024 launch race:

132 SpaceX
64 China
16 Russia
13 Rocket Lab

American private enterprise still leads the rest of the world combined in successful launches 151 to 96, while SpaceX by itself leads the entire world, including American companies, 132 to 115.

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Perseverance takes its first good look west at its future journey

12:32 pm

Peservance looks west
Click for original image.

Cool image time! The picture to the right, reduced and enhanced to post here, was taken today by the left navigation camera on the Mars rover Perseverance. Though I am not 100% certain, I think this picture looks almost due west, and is aimed not only at the rover’s near term target, Witch Hazel Hill, but the rover’s long term and very important goal, the Nils Fossae ridge and canyon that appears to be crack formed during the impact that created giant 745-mile-wide Isidis Basin. Jezero Crater sits on the western rim of that impact basin.

The rover team expects to reach Witch Hazel Hill within days. To get there quickly the team has moved the rover more than a thousand feet west and dropped down from the rim about 170 feet in just the past ten days.
» Read more

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December 19, 2024 Quick space links

3:10 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

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Land of dust devils

2:17 pm

Land of dust devils
Click for original image.

Today’s cool image to the right demonstrates that the atmosphere and climate of Mars is truly different in different places. The picture, rotated, cropped, reduced, and sharpened to post here, was taken on July 22, 2024 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). Labeled simply as a “terrain sample”, it was likely taken not as part of any specific research project but to fill a gap in the camera’s schedule in order to maintain its proper temperature.

I post it today almost to illustrate the difference between this location and the spot where the lander Insight landed on Mars. Earlier this week the MRO camera team released a short movie created by images of the lander taken over six years, showing how the dust around it had changed over time. I noted further how those images showed a very small number of dust devil tracks, which explained why no dust devil every crossed over the lander’s solar panels to clean them of dust.

For the picture on the right, however, there are a lot of dust devil tracks, so many near the bottom that they almost completely darken the ground.
» Read more

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Pushback: Blacklisted doctor gets lawsuit reinstated by higher court

1:25 pm

What apparently passes for medical treatment at the Hennepin Healthcare system
The kind of policies advocated by Hennepin Healthcare system
that Gustilo criticized

Fight! Fight! Fight! Back in August 2021, I reported the horrible blacklisting of Tara Gustilo, a biracial physician from the Philippines, who had been demoted and experienced a $150K cut in salary at the Hennepin Healthcare system in Minnesota simply because she had posted criticisms of the racist Black Lives Matter movement as well as the critical race theory policies, now known as Diversity, Equity, and Inclusion (DEI), that Hennepin was pushing.

In addition to filing a discrimination complaint with the federal government, Gustilo sued, represented by the Minnesota-based Upper Midwest Law Center (UMLC). You can read her lawsuit here [pdf].

That lawsuit however had been dismissed by a lower court. Last week however the Eighth Circuit Court of Appeals threw out that decision, reinstating the lawsuit.

The court’s decision can be read here. The court specifically noted that Gustilo’s right to free speech appeared to have been violated, and that fact must be considered by a jury.
» Read more

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Vast signs deal with SpaceX for two ISS tourist missions

12:34 pm

Depending on whether it gets NASA contractual approval, the space station startup Vast has now signed a deal with SpaceX for flying two tourist missions to ISS.

These two missions expand Vast’s launch manifest with SpaceX, which includes the company’s Falcon 9 rocket delivering Haven-1 to low-Earth orbit and a subsequent Dragon mission to fly crew to the commercial space station. Haven-1 will also be supported by Starlink laser-based high-speed internet.

Axiom, which has flown three tourist missions to ISS and has a fourth planned, is also bidding for the next two tourist slots NASA has made available for ISS in the coming years. It is not clear who will get those slots. Axiom has the advantage it has done it before, but the rumors that it lost money on those flights and now has a cash shortage work against it. Vast hasn’t yet flown, but it is moving fast to fly and occupy Haven-1 next year. NASA might want to give it at least one of those slots to balance the scales.

Hat tip to BtB’s stringer Jay.

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More evidence SLS and Orion are on the way out

11:12 am

An article today by a local Fox station in Orlando calling NASA’s decision to fly the next Artemis mission using the Orion capsule as a return to the bad culture that caused both shuttle accidents is strong evidence that the political winds are now definitely blowing against the future of both NASA’s SLS rocket and its Orion capsule.

The article interviews former NASA astronaut Charles Camarda, who expressed strong reservations about NASA’s willingness to make believe the failures of the Orion heat shield on its only test flight could be dismissed.

“The way they’re attacking the problem is echoes of Challenger and Columbia, using exactly the same bad behaviors to understand the physics of the problem,” [former astronaut Charles Camarda] said. “They’re not using a research-based approach.” Camarda worries NASA is pressing ahead with the current heat shields because he says “a lot of the engineers are afraid to speak up, and that’s a serious problem.”

The point is not the article itself, but that a mainstream propaganda news outlet is publishing this perspective. This fact suggests that there is a growing willingness within the political community to end both SLS and Orion, and articles such as this are used to strengthen that narrative. Politicos in DC have a great fear of canceling big projects, and for them to agree to do so requires a great deal of groundwork to make sure the public will accept the decision. Articles such as this one are thus published in the propaganda press for exactly this reason.

In other words, the Washington swamp has now begun its own campaign to cancel SLS and Orion.

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Alabama Republican congressman introduces spaceport funding bill to help a non-spaceport

10:00 am

In an example of the typically corrupt behavior of the Washington swamp, Alabama Republican congressman Dale Strong yesterday introduced a bill dubbed the Spaceport Project Opportunities for Resilient Transportation (SPACEPORT) act that has a lot of high-minded goals, but is mainly designed to funnel federal money to local regions. To quote Strong himself:

“The U.S. is the global leader in space, and North Alabama is at the forefront of that effort,” Strong said. “As former Chairman of the Madison County Commission, I worked closely with local city officials and commercial space stakeholders to secure Huntsville International Airport’s designation as the first entry site for space vehicle landings. I understand the preparation, coordination, and support required to safely and efficiently manage space launches and reentries. North Alabama is ready to leverage our unparalleled civil, commercial, and national security space expertise to support space infrastructure projects and the future of space exploration.” [emphasis mine]

Huntsville International Airport is not a spaceport. Giving it cash for this is nothing more than pork and a waste of the taxpayer’s money.

Strong’s bill is merely a proposal, and has been announced I think mostly to give this guy a photo-op. Nonetheless, it shows that we cannot trust any politician to do what they say. The Republicans always run on cutting the budget, but here we have a Republican eagerly proposing we spend money we don’t have in order to provide pork to his district. It is essential that his own constituents tell him in no uncertain terms that this kind of legislation is not what they hired him for. If they don’t, then things in Washington will only continue to do downhill.

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Activists sue Texas commission for allowing SpaceX to use its Superheavy deluge launch system

9:45 am

The same activist groups that have repeatedly used lawfare to try to block SpaceX’s operations at Boca Chica have now sued the Texas Commission on Environmental Quality (TCEQ) for allowing SpaceX to use its deluge launch system during Starship/Superheavy launches, claiming that dumping potable drinking water into the ground somehow damages the environment.

The groups — the South Texas Environmental Justice Network, along with the Carrizo/Comecrudo Nation of Texas, and Save RGV — filed the lawsuit Monday after the agency decided last month to allow SpaceX to continue its operations for 300 days or until the company obtained the appropriate permit.

These three groups represent only a very tiny handful of people in the Rio Grande Valley. The people the media interviews from Save RGV always includes the same persons, suggesting that few people in south Texas support it. The “Carrizo/Comecrudo Nation of Texas” in turn is a fake Indian tribe. It no longer exists, and when it did it existed in Mexico, not Texas. Finally, the “South Texas Environmental Justice Network” is simply an umbrella organization created on top of other two to make it appear they have more support than they do.

The real question that local journalists should be asking is where are these groups getting their money for all their lawsuits? I suspect it comes from outside the region, from leftist political organizations whose goals have nothing to do with the environment.

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Firefly’s Blue Ghost lunar lander wins its fourth lunar NASA contract

9:32 am

Peregrine landing site

NASA yesterday awarded the rocket startup Firefly a $179.6 million contract to carry six NASA science instruments to the Moon on its Blue Ghost lunar lander, the third lander contract the company has won and the fourth Moon contract overall.

[The four contracts include] three lunar landers as well as one to provide radio frequency calibration services from orbit to support a radio science payload on the second lander mission.

The first mission, Blue Ghost 1 or “Ghost Riders in the Sky,” is scheduled for launch in mid-January, with a landing in the Mare Crisium region of the near side of the moon about 45 days after launch. Blue Ghost 2 will follow in 2026, landing on the lunar farside. That mission will also deploy ESA’s Lunar Pathfinder communications satellite into orbit. Both the second and third Blue Ghost missions will use Firefly’s Elytra Dark as an orbital transfer vehicle, delivering the landers to lunar orbit. Those vehicles will remain in lunar orbit to provide communications services.

This new contract will have Blue Ghost land in the Gruithuisen Domes region, as shown on the map to the right. This had been the landing target for the Astrobotic’s Peregrine lander when it launched in January 2024, but that mission failed when it developed a fuel leak shortly after launch. Astrobotic was able to operate the spacecraft through most of its trip to and from the Moon, but had to cancel the landing.

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ESA awards Avio three contracts worth $372 million for its Vega rockets

9:16 am

Capitalism in space: The European Space Agency (ESA) yesterday awarded the Italian rocket company Avio three different contracts worth $372 million to further develop its Vega family of rockets.

The first two contracts subsidize work on upgrading the Vega-C launch site at the French Guiana spaceport as well as developing the company’s planned new rocket, Vega-E.

The third contract is more significant, because it signals the coming end of Arianespace, ESA’s commercial arm. Instead of going through that government-run agency — as ESA has done for a quarter century — ESA simply bought a Vega-C launch from Avio directly, the first time it has obtained launch services directly from a European company. The contract is to place in orbit an ESA climate research satellite.

The end of Arianespace was further signaled today by the announcement that Arianespace’s chief executive since 2013, Stephane Israel, is stepping down. It was Israel who in 2015 discouraged ESA from making Ariane-6 reusable. It was Israel who for years poo-pooed competition and free enterprise, lobbying continuously that ESA should do its launches through Arianespace exclusively.

Now, more than a decade later, ESA has finally rejected Israel’s arguments, and is eliminating the middle-man Arianespace entirely, purchasing launch contracts directly from the rocket companies while having its member nations as well as itself encourage the development of many private rocket companies across Europe.

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Chinese pseudo-company launches four satellites

8:41 am

According to China’s state-run press, China early this morning successfully launched four satellites using a commercial rocket, Ceres-1, that lifted off from an off shore launch platform on the country’s northeast coast.

The rocket supposedly belongs to the pseudo-company Galactic Energy, but China’s state-run press did not think this information was important enough to mention, illustrating why I think the company is not real. The satellites were likely communications satellites intended for one of the several giant satellite constellations China is building, but that information was also left out of China’s reporting.

132 SpaceX
63 China
16 Russia
13 Rocket Lab

American private enterprise still leads the rest of the world combined in successful launches 151 to 95, while SpaceX by itself leads the entire world, including American companies, 132 to 114.

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Axiom to speed up assembly of its space station

6:59 pm

Axiom's new module assembly sequence
Axiom’s new module assembly sequence

Capitalism in space: In order to be able to fly its space station independent of ISS more quickly, Axiom has rearranged the order it will launch some modules.

Originally, the plan was to attach Habitat 1 (AxH1) first, before the power and thermal module. Now, the on-orbit assembly sequence will start with the Payload Power Thermal Module (AxPPTM), followed by AxH1, an airlock, Habitat 2 (AxH2), and finally the Research and Manufacturing Facility (AxRMF). “The result – free-flight capability after the launch and berthing of PPTM,” [Mark Greeley, Axiom Space COO and station program manager,] explained, “[will allow] us to add modules while on orbit once we have separated from station. Our goal is to ensure a smooth transition from a government to a commercial platform, maintaining a continuous human presence on orbit to serve a community of global customers and partners, to include NASA.”

The AxPPTM primary structure will be built by Thales Alenia Space in Turin, Italy, and then relocated to Houston no earlier than fall 2025, where the integration of the internal structure and systems will take place at Axiom Space facilities.

The new sequence is shown in the graphic above. This change will allow Axiom to fly free two years sooner than previously planned, in 2028. It appears NASA pushed for this change possibly because it considers remaining attached to ISS until 2030 a risk that should be avoided. NASA apparently is increasingly concerned about the state of Russia’s Zvezda module, and fears it might have a catastrophic failure due to the stress fractures in its hull. The sooner Axiom can get free of ISS the better.

This modification also appears to include some major changes from previous Axiom graphics. It appears the airlock module and its solar panels have undergone a major design change.

Below is my present ranking for the launch of the four space stations being designed and built:

  • Haven-1, being built by Vast, with no NASA funds. The company is moving fast, and plans to launch and occupy it in 2025 for a 30 day mission. It will then build its mult-module Haven-2 station.
  • Axiom, being built by Axiom, which has also launched three tourist flights to ISS. Though there are rumors it is experiencing cash flow issues, today’s announcement suggests those rumors might be unfounded.
  • Orbital Reef, being built by a consortium led by Blue Origin and Sierra Space. Though Blue Origin has apparently done little, Sierra Space has successfully tested its inflatable modules, including a full scale version, and appears ready to start building the station’s modules for launch.
  • Starlab, being built by a consortium led by Voyager Space, Airbus, and Northrop Grumman.
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